From 65676d06f5b0b500934e59117bae4662c089c733 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 27 Nov 2012 12:10:35 -0500 Subject: [PATCH] drm/radeon/dpm: let atom control display phy powergating Signed-off-by: Alex Deucher --- drivers/gpu/drm/radeon/sumo_dpm.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/radeon/sumo_dpm.c b/drivers/gpu/drm/radeon/sumo_dpm.c index 7ab60068396e..69792e4ac1ce 100644 --- a/drivers/gpu/drm/radeon/sumo_dpm.c +++ b/drivers/gpu/drm/radeon/sumo_dpm.c @@ -813,6 +813,12 @@ static void sumo_program_bootup_state(struct radeon_device *rdev) void sumo_take_smu_control(struct radeon_device *rdev, bool enable) { +/* This bit selects who handles display phy powergating. + * Clear the bit to let atom handle it. + * Set it to let the driver handle it. + * For now we just let atom handle it. + */ +#if 0 u32 v = RREG32(DOUT_SCRATCH3); if (enable) @@ -821,6 +827,7 @@ void sumo_take_smu_control(struct radeon_device *rdev, bool enable) v &= 0xFFFFFFFB; WREG32(DOUT_SCRATCH3, v); +#endif } static void sumo_enable_sclk_ds(struct radeon_device *rdev, bool enable) -- 2.30.2